package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo {
    public static void main(String[] args) throws IOException {

        FileInputStream fis = new FileInputStream("mjh.jpg");
        FileOutputStream fos=new FileOutputStream("mjh_cp.jpg");
        long stare=System.currentTimeMillis();
        int d;
        while((d=fis.read())!=-1){
            fos.write(d);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完毕,耗时"+(end-stare));
        fis.close();
        fos.close();
    }
}
